And this leads to the biggest problem with religious “truth”: There’s no way of knowing whether it’s true. I’ve never met a Christian, for instance, who has been able to tell me what observations about the universe would make him abandon his beliefs in God and Jesus. (I would have thought that the Holocaust could do it, but apparently not.) There is no horror, no amount of evil in the world, that a true believer can’t rationalize as consistent with a loving God. It’s the ultimate way of fooling yourself. But how can you be sure you’re right if you can’t tell whether you’re wrong?
Why does this matter? Because pretending that faith and science are equally valid ways of finding truth not only weakens our concept of truth, it also gives religion an undeserved authority that does the world no good. For it is faith’s certainty that it has a grasp on truth, combined with its inability to actually find it, that produces things such as the oppression of women and gays, opposition to stem cell research and euthanasia, attacks on science, denial of contraception for birth control and AIDS prevention, sexual repression, and of course all those wars, suicide bombings and religious persecutions.